A new study, published in the British Journal of Psychiatry, is the first-ever global meta-analysis on the possible link between post-traumatic stress disorder (PTSD) and developing dementia up to seventeen years later. The researchers looked at 13 studies, spanning four continents and 1,693,678 people total. From pooling data from eight studies, the researchers found that those with PTSD faced a 61% higher risk for dementia. Two studies, using different methods, both yielded

You might have noticed how, after a night of poor sleep, any sort of stress you experience feels magnified. Now a new study from the University of British Columbia suggests that how much you sleep has a direct impact on how you feel about both positive and negative events the next day. The study, led by health psychologist Nancy Sin, examined daily diary data from nearly 2000 people in the US, comparing sleep duration with how people responded to both good and bad happenings

We tend to think of our personalities as pretty fixed and stable. We divide ourselves into introverts and extroverts, dreamers and realists, risk-takers and those who stick on the safe side, and we often treat these categories as immutable as blood types. However, every so often, science pops in to remind us that our decision-making skills can be shockingly malleable. According to a recent study by The Ohio State University, acetaminophen, the common over-the-counter headache

According to the Innocence Project, false eyewitness reports play a role in roughly 70% of wrongful convictions. Witnesses to crimes are notoriously unreliable in their recollections, and are especially vulnerable to influence from other witnesses. If given time to confer with each other, all it takes is one witness who remembered the facts incorrectly to contaminate all the witnesses' testimonies. On the surface, this seems like an immense problem. However, it might have a d